Marshall Hex
You could probably read nothing but the entire Jonah Hex canon, and never need to read any other western comics. Writer Michael Fleisher, and a stable of rotating artists cover pretty much every western trope that ever was. In this issue, No. 6, it's the one where the lawman and the criminal are traveling across the country handcuffed together.
'The Lawman' of the title refers originally to a Marshall who's apprehended Jonah Hex for the triple murder depicted in issue No. 2. But then the 'Lawman' of the title also refers to Jonah Hex, because when the Marshall ends up dying en route with Hex still shackled to him, Hex passes himself off as the Marshall, claiming the other man is his (now deceased) prisoner, when he comes upon a town.
This cover story of Hex as a Marshall then leads Hex to actually have to be the Marshall of the town when the townsfolk turn to him to intervene to stop a bank robbery.
Jonah Hex comics serve up standard western horse opera each issue - the stories may seem routine nowadays, but that's more a function of the genre itself having been worn threadbare than this particular title. Fact is the Jonah Hex comics probably rank among the best comic book westerns ever written.